Unson, J. M. (1998). No. 2 Abu Sayyaf chief killed by comrades. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnson, John M. "No. 2 Abu Sayyaf Chief Killed by Comrades." Manila Times 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnson, John M. "No. 2 Abu Sayyaf Chief Killed by Comrades." Manila Times, 1998.
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